A mixture of matter. A mixture consists of two or more elements physically combined. Take salt water. It is a mixture. So just evaporate the salt water to dryness, it would be separated into salt and water. Hence, mixture can be separatedinto different substances by physical means. You can also use magnet.
Answer is: It can be reshaped by a force.
Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change, changing the shape is physical change.
Copper reaction with acid, ignition and combination with oxygen are chemical change (chemical reaction), because new substances are formed, the atoms are rearranged and the reaction is followed by an energy change.
At 759 torr, 0.002 86 g of the gas will dissolve.
Henry’s law states:
, where
where 
is a proportionality constant called the Henry's Law constant.
If we have the same solute in the same solvent at two different pressures 
and 
,
and 
Dividing the two equations, k_H cancels and we get
c_1/c_2 = p_1/p_2
<em>c</em>_2 = <em>c</em>_1 × <em>p</em>_2/<em>p</em>_1
The volumes of solvent are the same, so we can use the masses of the solute instead of concentrations.
∴ <em>c</em>_2 = 0.003 27 g × (759 torr/867 torr) = 0.002 86 g
Well the problem is that Emily is capping. PERIODT jpjp
the answer is
B) the cap keeps the hair out of her eyes
I SWEAR IF IM WRONG THAN EMILY CAPPING CUZ MY CAP DECTOR IS GOING OFF
